Create a transit virtual interface to the AWS Direct Connect gateway

To provision a transit virtual interface to a Direct Connect gateway

1. Open the AWS Direct Connect console at https://console.aws.amazon.com/directconnect/v2/home.

2. In the navigation pane, choose Virtual Interfaces.

3. Choose Create virtual interface.

4. Under Virtual interface type, for Type, choose Transit.

5. Under Transit virtual interface settings, do the following:

   1. For Virtual interface name, enter a name for the virtual interface.

   2. For Connection, choose the Direct Connect connection that you want to use for this interface.

   3. For Virtual interface owner, choose My AWS account if the virtual interface is for your AWS account.

   4. For Direct Connect gateway, select the Direct Connect gateway.

   5. For VLAN, enter the ID number for your virtual local area network (VLAN).

   6. For BGP ASN, enter the Border Gateway Protocol Autonomous System Number of your on-premises peer router for the new virtual interface.

      The valid values are 1 to 2147483647.

6. Under Additional Settings, do the following:

   1. To configure an IPv4 BGP or an IPv6 peer, do the following:

      [IPv4] To configure an IPv4 BGP peer, choose IPv4 and do one of the following:

      • To specify these IP addresses yourself, for Your router peer ip, enter the destination IPv4 CIDR address to which Amazon should send traffic.

      • For Amazon router peer ip, enter the IPv4 CIDR address to use to send traffic to AWS.

        Important

        When configuring AWS Direct Connect virtual interfaces, you can specify your own IP addresses using RFC 1918, use other addressing schemes, or opt for AWS assigned IPv4 /29 CIDR addresses allocated from the RFC 3927 169.254.0.0/16 IPv4 Link-Local range for point-to-point connectivity. These point-to-point connections should be used exclusively for eBGP peering between your customer gateway router and the Direct Connect endpoint. For VPC traffic or tunnelling purposes, such as AWS Site-to-Site Private IP VPN, or Transit Gateway Connect, AWS recommends using a loopback or LAN interface on your customer gateway router as the source or destination address instead of the point-to-point connections.

        • For more information about RFC 1918, see Address Allocation for Private Internets.

        • For more information about RFC 3927, see Dynamic Configuration of IPv4 Link-Local Addresses.

      [IPv6] To configure an IPv6 BGP peer, choose IPv6. The peer IPv6 addresses are automatically assigned from Amazon's pool of IPv6 addresses. You cannot specify custom IPv6 addresses.

   2. To change the maximum transmission unit (MTU) from 1500 (default) to 8500 (jumbo frames), select Jumbo MTU (MTU size 8500).

   3. (Optional) Under Enable SiteLink, choose Enabled to enable direct connectivity between Direct Connect points of presence.

   4. (Optional) Add or remove a tag.

      [Add a tag] Choose Add tag and do the following:

      • For Key, enter the key name.

      • For Value, enter the key value.

      [Remove a tag] Next to the tag, choose Remove tag.

7. Choose Create virtual interface.